The Opaline Well Project is located approximately 190 km southeast of Port Hedland and 40km west of Nullagine and consists of a one Exploration Lease (E45/4997) of 67km2. Highly under explored region now attracting mid tiers, such as Greatland Gold and Infinity Minings, who are actively exploring on adjacent tenure. The general topographic relief of the Opaline Well project is largely influenced by the bedrock geology and is characterised by low hills with strike-controlled ridges to the east.
Westar considers the project to be prospective for both shear-hosted gold and VMS style base metal mineralisation. Historical rock chip samples in the Project area include 6.32 g/t, 7.95 g/t, 13.7 g/t , 13.22 g/t, 17.0 g/t, 20.5 g/t, 44.6 g/t and 200g/t Au. An historical base metal rock chip anomaly by Great Southern Mines, adjacent to the historic workings of Opaline Well-2 returned assays of 0.25-1.15% Cu, 0.14-1.85% Zn, 79-155g/t Ag and 0.19-0.41g/t Au. This is proximal to a smaller gravity high with a larger, more substantial gravity anomaly lying to the south-east of Opaline Well-1. There are no records of drilling at this location and the gravity anomaly is untested.
2021 field reconnaissance and rock chip sampling by Westar confirmed gold and base-metal mineralisation at the Triberton Creek Prospect, including 1.3g/t Au in OWR025 and, 0.3 g/t Ag from OWR062 and 218ppm Cu from OWR063. At the Opaline prospect rock chip samples returned 508 ppm Cu, 1,080ppm Zn and 343ppm Pb OWR019.
A follow up airborne EM survey was completed in Q4 CY2021 to rapidly identify discrete conductors representing potential massive sulphide drill targets. Four priority conductors were been identified, and ground truthed via heli-supported reconassaince in 2023, with rock chip samples including OWK0028: 0.8% Pb, 3.1ppm Ag & 0.1% Zn OWK0032: 0.23% Zn
Evaluating Westar rock chip samples together with historical rock chip assay data, Westar has delineated a ~700 x 1200m “Basin North Mineralised Trend”, indicating the potential for a large mineralised system may be present.
Figure 1 – Basin North Mineralised Trend with inset image of Sample OWK0028 – Base metal mineralised foliated, intensely altered mafic sampled adjacent to quartz vein.
Anomaly 101, and potentially related anomalies 201, 202 and 203
Anomaly 101 (centre) with surrounding anomalies 201 and 203, Line 10300, conductivity section